Mean-field ansatz for topological phases with string tension
Mean-field ansatz for topological phases with string tension
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具有弦张力的拓扑相的平均场模拟
DOI：
10.1103/physrevb.92.125150
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发表时间：
2015
影响因子：
3.7
通讯作者：
J. Vidal
中科院分区：
文献类型：
--
作者：
S. Dusuel;J. Vidal
我们提出了一个简单的平均场分析来研究从拓扑相到平凡相的相变。我们通过考虑存在弦张力的弦网模型来探讨这种方法的有效性。这样的扰动是已知的负责解约束相变，这是由目前的变分设置很好地描述。我们认为在大总量子维的极限下，平均场结果是精确的。
We propose a simple mean-field ansatz to study phase transitions from a topological phase to a trivial phase. We probe the efficiency of this approach by considering the string-net model in the presence of a string tension for any anyon theory. Such a perturbation is known to be responsible for a deconfinement-confinement phase transition which is well described by the present variational setup. We argue that mean-field results become exact in the limit of large total quantum dimension.